Balancing redox rxns in basic solution

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Netpheel Wang 4L
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

Balancing redox rxns in basic solution

Postby Netpheel Wang 4L » Mon Mar 11, 2019 1:10 am

How do you balance redox rxns in basic solution? Is there a process or steps that can be taken for any given problem?

Samantha Man 1L
Posts: 63
Joined: Fri Sep 28, 2018 12:22 am

Re: Balancing redox rxns in basic solution

Postby Samantha Man 1L » Mon Mar 11, 2019 1:31 am

You have to neurtralize the H+ ions by adding OH- ions for every H+ ions onto both sides of the equation. Once you have combined your 2 half-reactions, you can add the OH- ions to both sides depending on the number of H+ ions on each side.

KimGiang2F
Posts: 31
Joined: Fri Sep 28, 2018 12:19 am

Re: Balancing redox rxns in basic solution

Postby KimGiang2F » Tue Mar 12, 2019 4:56 am

After getting the skeletal equations for the oxidation and reduction half-reactions, you balance O atoms by adding H2O molecules. To balance the H atoms on each side add, for each H atom needed, one H2O molecule to the side of each equation that needs hydrogen and one OH- ion to the opposite side. Finally, you cancel the like species on opposite sides of the arrows and balance the charge by adding electrons. Bring the two half-reactions together to get the overall equation.


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